NIST2186II

Disodium hydrogen phosphate

NIST SRM 2186II

• Synonym(s): Sodium phosphate dibasic, sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate
• Linear Formula: Na₂HPO₄
• CAS Number: 7558-79-4
• Molecular Weight: 141.96
• MDL number: MFCD00003496
• UNSPSC Code: 41116107
• PubChem Substance ID: 329818735
• NACRES: NA.24

Properties

• grade: certified reference material
• Quality Level: 100
• form: powder
• packaging: pkg of 30 g
• manufacturer/tradename: NIST^®
• pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• application(s): general analytical
• SMILES string: [Na+].[Na+].[H]OP([O-])([O-])=O
• InChI: 1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2
• InChI key: BNIILDVGGAEEIG-UHFFFAOYSA-L

Description

General description

NIST2186II is certified as a p^H standard for p^D(S) determination.

SRM 2186II_cert

SRM 2186II_SDS

Application

SRM 2186II solution is recommended for the calibration of p^H meters to use for the measurement of p^D in deuterium oxide.

Legal Information

NIST is a registered trademark of National Institute of Standards and Technology

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable